<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <script>
    let product = {
      goods: '小米',
      name: '小米小米10 青春版',
      num: '100012816024',
      weight: '0.55kg',
      address: '中国大陆'
    }
    console.log(product)
    console.log(product.address)
    product.name = '小米10 青春版'
    console.log(product)

    product.price = '3000元'
    console.log(product)

    delete product.goods
    console.log(product)
    
  </script>
</body>
</html>